Effects of expression technology on physical parameters and phytochemical profile of Echinacea purpurea juice

The objective of this study was to compare the quality of E. purpurea juice obtained using two types of press, a hydraulic bag press (BP) and a mechanical screw press (SP). Cichoric acid concentration was about twice as high in the SP juice compared to the BP juice. Qualitative and quantitative diff...

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Bibliographic Details
Published in:	HortScience Vol. 39; no. 1; pp. 146 - 148
Main Authors:	Brovelli, E.A, Boucher, A.Y, Arnason, J.T, Menon, G.R, Johnson, R.M
Format:	Journal Article
Language:	English
Published:	Alexandria, VA American Society for Horticultural Science 01-02-2004
Subjects:	Agronomy. Soil science and plant productions Biological and medical sciences Fundamental and applied biological sciences. Psychology
Online Access:	Get full text
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Summary:	The objective of this study was to compare the quality of E. purpurea juice obtained using two types of press, a hydraulic bag press (BP) and a mechanical screw press (SP). Cichoric acid concentration was about twice as high in the SP juice compared to the BP juice. Qualitative and quantitative differences in the alkylamides were observed, in favor of the SP. BP juice had a significantly higher pH, density and viscosity. No differences were observed in levels of soluble or total solids. The results of this study suggest that SP is more suitable for Echinacea juice expression than BP. Engineering and juice quality considerations in the selection of expression technology for medicinal plants are discussed in the context of therapeutic value.
ISSN:	0018-5345 2327-9834
DOI:	10.21273/HORTSCI.39.1.146